Servos for Seba Katana 30E

[Juan_Acro3D]

Hello everybody!

I'm building this beauty, and I would like to use Futaba's servos, but I have no experience with them. What Futaba servos would you recommend for this size of plane? The manual recommends JR 381...

what do you think?


thanks in advance

[TheTank]

I asked the same question to the man himself, John Glezellis, and he told me that in his setup, he is running:

Hacker A30-14L
Futaba 3115 servos (takes slight modification to fit these, as they are slightly larger than a Hitec65 for example, which will drop right in)
APC 14x7E prop
3Cell 20C 2000 mah Lipo (you can use a 4 cell, but John says the 3Cell keeps it real light and still has plenty of power).

[Juan_Acro3D]

Hi John, I saw that Glezellis used the 3115, but I think that's way too overkill (and on weight and size). I was thinking about the 3114 Nano and a 114F micro receiver. What do you think?:

FUTM0414 Volts Torque Speed 4.8V 21.0 oz-in. 0.10 sec/60° 6.0V 23.6 oz-in. 0.09 sec/60° Dimensions Weight 0.9 x 0.4 x 0.8 in. 0.275 oz.

[John Glezellis]

Hi Guys,

I found that the best servos on this model have 30-oz/in of torque or more. While the 3115 may seem a bit overkill, it has 38.9-oz/in of torque, and you can feel it while rolling at high speeds; simply said, no blow-back whatsoever. The only downside, though, is that slight modification needs to take place as the model was designed around a servo that is the size of the HS-65.

Regarding the receiver, I have been using the 146-6-channel PCM receiver from Futaba, and will try the R606FS (Futaba's 6-channel 2.4 receiver) over the weekend.

All in all, it is a great flying airplane and has a lot of potential. Mainly, it is big for its size and is light!

Best Regards,
JPG

[Juan_Acro3D]

Thank you very much for your help. I wouldn't like to modify the servo holes, so I think I will go with the Hitec 65. Now the question is, HB or MG?

[Jaybird]

I would use the HB's. the geartrain feels tighter to me.
Brian

[Juan_Acro3D]

thank you guys!

[leeMcCrory]

Hiya juan. Ive got hitec-65mgs all round on my Katana30s and theryre sweet. I used to eat Hbs for breakfast on the Pa mini katana so i wont use em anymore.-Although i was Mr Dingsville back then? You could do the hotelwalk with this bird mate -Show Seba how its done?

[Juan_Acro3D]

thanks lee! I've just received at home the plane. It looks awsome. Hope to get it in the air by next weekend. Any special suggestion for the building?

[leeMcCrory]

You lucky man. The 30S is a dream. It goes together realy nice. I diddnt take any notice of the instructions regarding elevator hinging. I cut a small wedge out to install the horizontal stab as i diddnt like the suggested way of using tweezers to poke-in the hinges aftrewards. I just stuck the small wedge back after the elevator was hinged. I would of made a mess trying to follow sebas pics? For really stable hovering and indoor Huckin - i use a 1800 20c lipo, for general 3D i use A 2200-20C. Cant wait to see you fly it, im sure youll make it look amazing. As per usual